Single platinum atoms implanted 2D lateral anion-intercalated metal hydroxides of Ni2(OH)2(NO3)2 as efficient catalyst for high-yield water splitting

Le, Huu Tuan; Tran, Duy Thanh; Nguyễn, Thanh Hải; Dinh, Van An; Kim, Nam Hoon; Lee, Joong Hee

doi:10.1016/j.apcatb.2022.121684

Cited by 24 publications

(10 citation statements)

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“…The calculated Tafel slopes of Pt 1 /CeO x is compatible with a Volmer–Tafel mechanism (30 mV dec –1 ), while the same value of both Pt NCs /CeO x (38 mV dec –1 ) and Pt 1 /CeO 2 (45 mV dec –1 ) is closer to that of having a Volmer-Heyrovsky mechanism (40 mV dec –1 ) . The Tafel value validates a fast rate-determining step over the Pt single-atom-supported O v -rich ceria for HER activity, matching with the performance of the Pt-containing catalysts . In addition, the Pt 1 /CeO x catalyst exhibits a smaller overpotential (37 mV) at current densities of 10 mA cm –2 with respect to Pt NCs /CeO x (41 mV), Pt 1 /CeO 2 (45 mV), and CeO x (150 mV), even lower than that of Pt/C (39 mV), respectively.…”

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confidence: 91%

“…27 The Tafel value validates a fast rate-determining step over the Pt singleatom-supported O v -rich ceria for HER activity, matching with the performance of the Pt-containing catalysts. 28 In addition, the Pt 1 /CeO x catalyst exhibits a smaller overpotential (37 mV) at current densities of 10 mA cm ) at an overpotential of 100 mV (vs RHE), 17.6 times higher than that of Pt/C (7 mA cm −2 mg Pt −1…”

mentioning

confidence: 96%

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Pt Single Atoms Supported on Defect Ceria as an Active and Stable Dual-Site Catalyst for Alkaline Hydrogen Evolution

Dao,

Di Liberto,

Yadav

et al. 2024

Nano Lett.

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This work evaluates the feasibility of alkaline hydrogen evolution reaction (HER) using Pt single-atoms (1.0 wt %) on defect-rich ceria (Pt1/CeO x ) as an active and stable dual-site catalyst. The catalyst displayed a low overpotential and a small Tafel slope in an alkaline medium. Moreover, Pt1/CeO x presented a high mass activity and excellent durability, competing with those of the commercial Pt/C (20 wt %). In this picture, the defective CeO x is active for water adsorption and dissociation to create H* intermediates, providing the first site where the reaction occurs. The H* intermediate species then migrate to adsorb and react on the Pt2+ isolated atoms, the site where H2 is formed and released. DFT calculations were also performed to obtain mechanistic insight on the Pt1/CeO x catalyst for the HER. The results indicate a new possibility to improve the state-of-the-art alkaline HER catalysts via a combined effect of the O vacancies on the ceria support and Pt2+ single atoms.

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confidence: 91%

mentioning

confidence: 96%

Pt Single Atoms Supported on Defect Ceria as an Active and Stable Dual-Site Catalyst for Alkaline Hydrogen Evolution

Dao,

Di Liberto,

Yadav

et al. 2024

Nano Lett.

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“…Due to the corrosive nature of chloroplatinic acid (H 2 PtCl 6 ) solution, chemical etching reactions occurred on NiTe nanosheets when they were exposed to H 2 PtCl 6 solution, in which the oxidation state of Ni in the NiTe-Ns increased, accelerating the reduction process of Pt 4+ cations, allowing Pt nanosheet layer formation on NiTe nanosheets (Pt Ns /NiTe-Ns). [23] Figure 1a shows the powder X-ray diffraction (XRD) spectra of the as-synthesized samples. The main diffraction peaks at 29.97°, 34.16°, and 45.12°are indexed to the NiTe (JCPDS No.…”

Section: Resultsmentioning

confidence: 99%

Interface Engineering Induced Electron Redistribution at Pt_Ns/NiTe‐Ns Interfaces for Promoting pH‐Universal and Chloride‐Tolerant Hydrogen Evolution Reaction

Sun,

Chen,

Xiao

et al. 2023

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Exploring highly efficient hydrogen evolution reaction (HER) electrocatalysts for large‐scale water electrolysis in the full potential of hydrogen (pH) range is highly desirable, but it remains a significant challenge. Herein, a simple pathway is proposed to synthesize a hybrid electrocatalyst by decorating small metallic platinum (Pt) nanosheets on a large nickel telluride nanosheet (termed as PtNs/NiTe‐Ns). The as‐prepared PtNs/NiTe‐Ns catalyst only requires overpotentials of 72, 162, and 65 mV to reach a high current density of 200 mA cm−2 in alkaline, neutral and acidic conditions, respectively. Theoretical calculations reveal that the combination of metallic Pt and NiTe‐Ns subtly modulates the electronic redistribution at their interface, improves the charge‐transfer kinetics, and enhances the performance of Ni active sites. The synergy between the Pt site and activated Ni site near the interface in PtNs/NiTe‐Ns promotes the sluggish water‐dissociation kinetics and optimizes the subsequent oxyhydrogen/hydrogen intermediates (OH*/H*) adsorption, accelerating the HER process. Additionally, the superhydrophilicity and superaerophobicity of PtNs/NiTe‐Ns facilitate the mass transfer process and ensure the rapid desorption of generated bubbles, significantly enhancing overall alkaline water/saline water/seawater electrolysis catalytic activity and stability.

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“…10b) improved the HER activity, requiring 66 mV to reach 10 mA cm −2 . Very recently, Lee et al fabricated Pt single atom (SA) on 2D NiHN via molten salt method followed by dipping the NiNH into 1 mM solution of H 2 PtCl 6 [171]. The Pt SA -2D NiHN catalyst exhibited outstanding performance for HER (24 mV at 10 mA cm −2 ), OER (280 mV at 50 mA cm −2 ) and overall water splitting (1.45 V at 10 mA cm −2 ).…”

Section: Construction Of Heterostructure/compositesmentioning

confidence: 99%

Recent Advances of Transition Metal Basic Salts for Electrocatalytic Oxygen Evolution Reaction and Overall Water Electrolysis

et al. 2023

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Electrocatalytic oxygen evolution reaction (OER) has been recognized as the bottleneck of overall water splitting, which is a promising approach for sustainable production of H2. Transition metal (TM) hydroxides are the most conventional and classical non-noble metal-based electrocatalysts for OER, while TM basic salts [M2+(OH)2-x(Am−)x/m, A = CO32−, NO3−, F−, Cl−] consisting of OH− and another anion have drawn extensive research interest due to its higher catalytic activity in the past decade. In this review, we summarize the recent advances of TM basic salts and their application in OER and further overall water splitting. We categorize TM basic salt-based OER pre-catalysts into four types (CO32−, NO3−, F−, Cl−) according to the anion, which is a key factor for their outstanding performance towards OER. We highlight experimental and theoretical methods for understanding the structure evolution during OER and the effect of anion on catalytic performance. To develop bifunctional TM basic salts as catalyst for the practical electrolysis application, we also review the present strategies for enhancing its hydrogen evolution reaction activity and thereby improving its overall water splitting performance. Finally, we conclude this review with a summary and perspective about the remaining challenges and future opportunities of TM basic salts as catalysts for water electrolysis.

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Single platinum atoms implanted 2D lateral anion-intercalated metal hydroxides of Ni2(OH)2(NO3)2 as efficient catalyst for high-yield water splitting

Cited by 24 publications

References 59 publications

Pt Single Atoms Supported on Defect Ceria as an Active and Stable Dual-Site Catalyst for Alkaline Hydrogen Evolution

Pt Single Atoms Supported on Defect Ceria as an Active and Stable Dual-Site Catalyst for Alkaline Hydrogen Evolution

Interface Engineering Induced Electron Redistribution at Pt_Ns/NiTe‐Ns Interfaces for Promoting pH‐Universal and Chloride‐Tolerant Hydrogen Evolution Reaction

Recent Advances of Transition Metal Basic Salts for Electrocatalytic Oxygen Evolution Reaction and Overall Water Electrolysis

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Single platinum atoms implanted 2D lateral anion-intercalated metal hydroxides of Ni2(OH)2(NO3)2 as efficient catalyst for high-yield water splitting

Cited by 24 publications

References 59 publications

Pt Single Atoms Supported on Defect Ceria as an Active and Stable Dual-Site Catalyst for Alkaline Hydrogen Evolution

Pt Single Atoms Supported on Defect Ceria as an Active and Stable Dual-Site Catalyst for Alkaline Hydrogen Evolution

Interface Engineering Induced Electron Redistribution at PtNs/NiTe‐Ns Interfaces for Promoting pH‐Universal and Chloride‐Tolerant Hydrogen Evolution Reaction

Recent Advances of Transition Metal Basic Salts for Electrocatalytic Oxygen Evolution Reaction and Overall Water Electrolysis

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Product

Resources

About

Interface Engineering Induced Electron Redistribution at Pt_Ns/NiTe‐Ns Interfaces for Promoting pH‐Universal and Chloride‐Tolerant Hydrogen Evolution Reaction